package com.twq.corejava.wrap;

public class TestDouble {
    public static void main(String[] args) {
        Double d = Double.valueOf(20.01); // 装箱
        double temp = d.doubleValue();

        System.out.println(d);
        System.out.println(temp);

        Double dou = 20.09;
        double t = Double.valueOf(20.08);
    }
}
